Use
17Cr3 Ministry of strength for the heart to withstand wear and surface higher, a larger size, or shape of the load much more complex and carburizing parts such as gears, gear shaft, cam, piston pin, worm, etc., can also be used large and medium speeds work under shock loading of quenched and tempered parts. [1]
Physical properties
Chemical composition
Carbon C: 0.14 ~ 0.20 Si Si: ≤ 0.40 Mn Mn: 0.60 ~ 0.90 Sulfur S: to allow the residual phosphorus content ≤ 0.035 P: ≤ 0.035 to allow the residual content of chromium Cr: 0.70 ~ 1.00 Ni: to allow the residual content of ≤ 0.030 Copper Cu: allow the residual content ≤ 0.030 [2]
Mechanical properties
Tensile strength σb (MPa): ≥ 835 (85) yield strength σs (MPa): ≥ 540 (55) Elongation δ5 (%): ≥ 10 Reduction of area ψ (%): ≥ 40 impact energy Akv (J ): ≥ 47 impact toughness αkv (J/cm2): ≥ 59 hardness: ≤ 179HB sample size: Sample size of blank 15mm [3]